Is it normal to feel pressure in your rectum while pregnant?

Soo question… I’m 30 weeks almost 31 (Tuesday). I’ve been feeling pressure in my rectum area, lower pelvis and also every bowel movement for the last week or two have been loose… not diarrhea loose but definitely more loose than the whole pregnancy. Ive had four other csections and it’s honestly it feels like the baby has dropped… is this a common occurrence?